Nickel iron blast furnace smelting process with nickel oxide ore as raw material

A blast furnace smelting and nickel oxide technology, applied in blast furnaces, blast furnace details, furnaces, etc., can solve problems such as environmental pollution, affecting the purity of ferronickel, and increasing the production cost of smelting ferronickel, so as to reduce environmental pollution and solve nickel ore resources Crisis, the effect of reducing smelting costs

Inactive Publication Date: 2010-01-06
ZHANGJIAGANG POHANG STAINLESS STEEL
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Problems solved by technology

Fluorite contains more calcium fluoride, which will produce more fluoride after smelting, which will pollute the environment; while the use of dolomite may introduce other impurities into ferronickel, which will affect the purity of ferronickel and also affect the purity of ferronickel. Will increase the production cost of smelting ferronickel

Method used

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  • Nickel iron blast furnace smelting process with nickel oxide ore as raw material
  • Nickel iron blast furnace smelting process with nickel oxide ore as raw material
  • Nickel iron blast furnace smelting process with nickel oxide ore as raw material

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Embodiment 1-5

[0027] Example 1-5: Ferronickel blast furnace smelting process using nickel oxide ore sinter as raw material

[0028] Raw materials for smelting: the main components and contents of nickel oxide ore are shown in Table 1. The nickel oxide ore used in Examples 1-5 of the present invention is laterite nickel ore from the Philippines or Indonesia.

[0029] Smelting process: Mix and stir nickel oxide ore raw ore powder with quicklime, sieve raw ore powder with a particle size below 15mm, mix ingredients with anthracite / coke powder and quicklime to obtain sintered ore; sinter ore larger than 5mm and coke and Other auxiliary materials are mixed and put into the blast furnace for smelting to obtain ferronickel.

[0030] Table 1: Main components and content (mass percentage, unit: %) of nickel oxide ore

[0031]

[0032] Table 2: Main components and contents of sintered ore (mass percentage, unit: %)

[0033]

[0034] In Examples 1-5, the addition amounts of the sintered ore, ...

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Abstract

The invention relates to a blast furnace ferronickel-smelting technology which takes nickel oxide ore as raw material. The blast furnace ferronickel-smelting technology comprises the following steps: nickel oxide ore is mixed with coke and borax to obtain a mixture; and the mixture is loaded into a blast furnace to obtain the ferronickel by smelting. The technology is a novel blast furnace ferronickel-smelting technology, and adopts the nickel oxide ore with rich resource as the raw material to smelt the ferronickel, thus reducing the dependence of ferronickel production on nickel sulfide ore, and being beneficial to solving the crisis of nickel ore resources; the borax is adopted to replace traditional solvents such as fluorite and dolomite, etc., thus decreasing the emission of fluoride, reducing the environment pollution, simultaneously, reducing the consumption amount of the solvents and accessories, and effectively reducing the smelting cost of the ferronickel, with the usage of the coke being reduced by 100 to 300 Kg for smelting one ton of the ferronickel.

Description

technical field [0001] The invention belongs to the field of blast furnace smelting technology of ferronickel, and in particular relates to a technology for smelting ferronickel in a blast furnace using nickel oxide ore as raw material. Background technique [0002] With the wide application of stainless steel and special steel, the main element of smelting stainless steel and special steel - nickel metal is in short supply and the price is soaring. At present, the world's proven nickel resource reserves are about 160 million tons, of which 30% are sulfide ores and 70% are nickel oxide ores. However, about 60% of nickel products currently come from sulfide ores. Traditional nickel metal production is mainly obtained from nickel sulfide ore. With the development of the global stainless steel industry, especially in China, the annual growth rate of nickel metal consumption will reach 5% in the next few years, but the current global nickel sulfide ore resources have emerged Cr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B5/02
Inventor 成乐铉陶高驰肖峰张英君卢晓东
Owner ZHANGJIAGANG POHANG STAINLESS STEEL
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